Objective:
To optimize sex pheromone attractants for field use in monitoring or managing two species of pear psyllids, pests of pears in North America and Europe.

Approach:
1. Olfactometer trials to demonstrate attractiveness of compounds isolated from female psyllids.
2. Field tests of synthesized forms of products identified in the first objective using attractant-baited sticky traps.
3. Seasonal comparison in field of the synthesized products by comparing trap catch of psyllids on attractant-baited traps at various times of season.